#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>

int main()
{
	char * fn = "1.txt";
	int fd ;
	
	while (1)
	{
	
		fd = open(fn , O_RDONLY);
		printf("%d\n", fd);
	}
}
